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A soft cheese of goat or sheep milk, or a blend, from Kos. Dairies pasteurise the milk, set it with culture and rennet at 32–34 °C, rub the curd to wheat-grain size and drain it in long grooved reed baskets; the cheeses are surface-salted and drained at least a day. They then ripen at least a month in 'possia', boiled red wine lees, which tints the rind red and gives a wine aroma.
Amounts from a sourceThe specification gives no doses. A dairy needs a little over 4 kg of milk for 1 kg of cheese; farms use 4 kg of a 50:50 goat and sheep blend, or 5–6 kg when the milk is mostly goat.
Goat milk, sheep milk or a blend, pasteurised or raw, from breeds raised on Kosjust over 4 kg per 1 kg of cheese
What changes:The milk is heated to 72 °C, then cools on its way to the tank
Step 1 of 6
Pasteurise the milk
Time
10–15 min
Set
Temperature
71.8–72 °C
Set
Salt
None given
Acidity
Not documented
Farm makers bring raw milk to the fold within 4 hours and heat it to 36 °C, or pasteurise it.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
A soft cheese of goat or sheep milk, or a blend, from Kos. Dairies pasteurise the milk, set it with culture and rennet at 32–34 °C, rub the curd to wheat-grain size and drain it in long grooved reed baskets; the cheeses are surface-salted and drained at least a day. They then ripen at least a month in 'possia', boiled red wine lees, which tints the rind red and gives a wine aroma. Made in 6 steps over 32 days. The longest step, ripen in wine lees, takes at least 30 days (Single document 'Κρασοτύρι Κω' (Krasotiri Ko)…).
Ripened at least a month buried in boiled red wine lees (possia), which colours the rind and gives the wine aroma; its grooved log shape comes from the reed draining baskets.
Fat and water
At least 43 % fat in dry matter; at most 56 % water
Shape
A scored, long, uneven cylinder with deep grooves from the tyrovoli
The specification allows pasteurised or raw milk and bans antibiotics, pesticides, preservatives and other additives in the milk. Dairies pasteurise at 72 °C. Farm cheese from raw milk spends 2–3 months in brine before the lees. Producers test the milk and the cheese microbiologically from time to time. The specification sets no pathogen limits, and no safety study of this cheese was found. For the raw-milk kind, ANSES names Listeria monocytogenes, Salmonella and enterohaemorrhagic E. coli as hazards of raw-milk cheeses and tells pregnant women, young children, people over 65 and people with weak immunity to avoid them, apart from cooked pressed kinds such as Gruyère.
The specification cites a 2013 local newspaper article on exports of this cheese from Kos under Ottoman and Italian rule and up to 1960. It quotes a 2015 local article saying grocers and agas put unsold cheese in barrels of possia, to sell in winter or export. It also quotes a 2003 local periodical saying that foreign travellers of the 18th and 19th centuries noted Kos's vineyards and wine, whose thick lees made the possia in which island herders immersed their cheeses.